Ladder.



P. W. HILL.

LADDER.

APPLICATION FILED un. 2a, 1911.

Patented Apr.` 25, V1911.

serl

-'6 tnnataz'ral dii-ringe. the interval of; I consolida.'-

PETER W. HILL, OF DORCHESTER, MASSACHUSETTS.

LAD-DER.

Specification of Letters Patent.

Patented Apr. 25, 15911.

Application tiled January 23, "1911. Serial No. 604.279.

To all lwhom it may concern:

Be it known that l, Pe'rnn lV. 'l'lim., a citizen oi the United States, and a resident of Dorchester, in the county-of Suffolk and 5 State of Mztssachusctts, have inw-allied eertain new and useful Improvements in Ladders, of which the following,l a specifica tion.

'My invention relatesI to iinln'ovt-nnents in ladders, and specifically to the type which is built into the construction during the progress of theI work.

The object of my invention is to provide a two-piece durable und Lleiendable device particularly applicable to the interiore of concrete construction, but also adapted with slight n'iod-ifieation to walls of brick and similar building material. l attain this object through the novel. construction illustrated-in the annexed drawing forming a part -of this specification, wherein Figure 1, is a perspective View of .the prin'iary or receiving' niernber of my invention. 2, denotesl a similar View `exzfhibiting the secondary member in its assigned position whenthe device is assembled. Fig..` 3, is a 4p ertpeotive of the.,secomiarys7 member or step, disconnected from the primary ine-mbe).l or receptacle. Fig.. 4, ie a vertical cent-ral section of the primary mei-nber-and lexhibits my invention embedded in cenoreteil-uring.- the progressive construction. Fig: 5, illustrates the practical. adaptation of any' improvement-to thei'nsideof a street ASen/agel'oenetruetion yor oat-cli basin, `the footv res-ts' Iplaced.aiter-nate'ly:of a median line, lor ventioallv as desi-red, Fig. 6, is a modified' for'mf menstruation adaptable to straeictural wwl'lsl-offbrfick-.andstone. 40'- Goi 'es' ondingfjletters of reference indi-l ciaztefsiimiA ai" features throughout .the .drawinge? Biei'flwingftowhichz- A, .designates-broadly theeasing. o11reL ceptaol'e, preferably of Ametal,:thenpper and `-lower mills HBl and G .respeet-'velj, `divergf ingfifrfornthe `:face *D su bfsaantially 5 as shown to the angular conformation necessmrylto retaicnment-in-the concrete "Thef -sdefiwl 21E, maybe vertical, the-overA iila .pingeents of''the lfa;oe" being provi e'd-iwitlipeforati0ns G, fonthe purpose of temporary confinement', by ;.na.i'lin .to the hoardingmbarre (Fig. .4)- Tof-fpr sinking-'- eguali t :employed-f-toieonne-the. cementit-igusf i tient .l'iie'rinteiior oef-f the :casingV Av comprieee practically two integral incloeures H und l within said vertical and inclined walls l, and l, the fol-incr being` open rearwardly .o admit the plastic material, while the latter, having an aperture of two dimensions admits the grunt rigidly conning the secondnry member J :following its insertion and :u'ljustlnent within said inelosure or clnunber I. This member .l embodies the 'lootrest plate, which, it is obvious, serves the saine capacit-y as the rung of the ordi nailatlder,"hut with the further advantage of forming a substantial and-roomy footing with strength to sustain. the lleziviest im! posed weight. (Vig. .51) is. eoinewhat crueiiorn'i, the 'weight being supported by the protruding freine K, the anchor L p ositionetfl inside the inolosure I (Fig. 4.) the reenter-ing` spaces M.l\-I, forming the shouldn-nfs N-N (Fig. which interlock withV the co-ncting opposing edges O O, of the aperture 1.),'in the face plate D when the parts are aseeinbled. In. the .final adjustment of' the step d, it. may be `perirni-nently secured by .introducing grout through the orifice Q, slnntingly perforating,` the anchor L, in a manner to facilitate the passage of the gront or similar inateria-l to the lower portion of the chamber I and filling said` orifice-Q, thus forming;

a. bed insuring' stabilityV to the member1 J. To temporarily secnre the part' J, ythe lower half 'of said chamber I nee'donlgT to befilled as prerionsly described to the lower level of the orifioe Q., thus forming a lloor for the anchorL', tliis method theetep can' be disconnected-and replaced when desired, by

moving thesa-me to the position indicated VVin dotted lines (Blige).

Under'certain'con'ditions it may bejdesin ablefto innige'abQrtiile any use of the seeorid-` any-members J", `asin ir'rstances where ingre-ss only Tto authorized^` employees', to Whom acoessjtsaid members J Ilis' ermissible, and inE divers` Ways that couldp be suggested; under sueh circumstances the temporary `ad justnient would beprefred;

n; 'ed-formi e ois adapted@ nearly-all' forrtis of'bonded vv-ellis,V andtdtliis endl the exterior surfaces-B". C.l maybe Lcoij# rugated lor roughened Eto better' retainfthe plastic: material 'used to bind the struetiiire.`

ln design this'plate or step a-nhorfL. may'als'o be cut away on the dotted 'said shoulder latter to line 111'., Fig. 3) to faeilitate its Withdrawal.

In other essentials it is the prototype of fliig. 2.

. Obviously my invention can be utilized in exterior construction but preferably I confine its use as exemplified in Fig. 5, and while minor changea may be made in the precise details and exact arrangement of parts7 l desire not to restrict myself to the epeeiio embodiment herein given for the purpose of illustration and,

l. A. ladder 'comprising in combination with a wall, a easing having a front face formed with a T-shaped opening and having its rear open, said easing having upper and lower walls which diverge from said front lane, a dividing Wall in the easing between the lront and rear faces thereof, said dividin Wall being of angular' Conformation to turni a sl'loulder, a foot rest 'having a T- Shaped inner end to engage in Said opening of the front ifaee of the casing and to abut of the dividing Wall.

A ladder comprising in combination with a Wall, a easing having a'front face formed with a. T-shaped openingl and having its rear open, said easing having upper and loi/ver walls which diverge from said front face, a dividing' YWall in the easing between the front and rear faces thereof, said dividforin a shoulder, a foot rest having a T- shaped inner end to engage in said opening of the front face ofthe easing and to abut said shenlder' ofthe dividing Wall, said inner end of the foot rest being formed with an aperture to receive Wet grout-,to allovv the he poured therethrough to form a bed for the foot rest.

ing Wall being of angular conformation to.

3. A ladder comprising in combination with a Wall, a easing having a 'front face formed with an opening and having an overhanging shoulder .intermediate the top and bottoni of said easing to the rear of said front face, and a foot rest introduced through said opening and having its inner end in engagement With Said shoulder to hold the rest against upward movement at its inner end.

.Je A ladder comprising in combination with a Wall, a easing forined with.` an intermediate dividing Wall to form a grout r'eceiving Chamber at its rear and a foot rest receiving Chamber at its front, said dividingr wall having a shoulder' .the front face of the easing having an openingfand a foot rest having its inner end arrangediin said front chamber and in engagement With said ehoulder. v

5.' A. ladder comprising in combination with a Wall, a casing formed with an intermediate dividing Wall to :torni a grout receiving chamber at its rear and a foot rest vreceiving chamber at ite front, said dividing wall having a shoulder, the front i'aee of the casing having an opening, and a foot reet having its inner end arranged in said front ehain'ber and in engagement With said Shoulder, and means whereby Wet grout may be poured in the front 'chamber to fill the Same below said ootrest to provide a hed for the latter.

In testimony whereof I have affixed my signature, 1n preeenee of two Witnesses.

PETER W. in'Ln Witnesses N Ionen-is GENTLEMAN, JOSEPH .1). MURRAY. 

